Critical Knowledge:

• Retractable hardtop convertible
• Replaces both the previous-generation Z4 Roadster and Z4 Coupe
• Enhanced interior room
• Includes iDrive as standard equipment
• Rear-wheel drive with a 50/50 weight distribution
• Choice of two 6-cylinder powerplants
• Optional 7-speed dual-clutch automatic transmission

Introduction
The first popular modern incarnation of BMW's roadster appeared as the Z3 in 1996 (the Z8 was a hand-built, limited-production vehicle which had appeared a few years earlier). While open motoring was a new experience to mainstream BMW buyers, the 2-seat droptop was offered with a 1.8-liter 4-cylinder engine that did little to stir the soul. Several larger engines appeared in subsequent years (including an M Roadster in 1998), and a fixed-roof Coupe joined the lineup in 1999. Both Z3 models were replaced by the all-new Z4 Roadster/Coupe models in 2003 and 2006, respectively. Larger, stronger and more refined than their predecessors, BMW's Z4 models were offered with a choice of 6-cylinder powerplants and manual, automatic or Sequential Manual Gearbox (SMG) transmissions.

The 2009 model year marks a significant change in BMW's Z4 lineup with the debut of an all-new model at the North American International Auto Show. It is a retractable hardtop convertible-a first for BMW's roadster. The new roof allows the redesigned 2009 Z4 Roadster to effectively replace both the convertible and coupe models from the previous generation. Its near-perfect weight balance, two available 6-cylinder engines (one with two turbochargers), and choice between three transmissions only adds to the Z4's appeal.

For more information:

• See 2009 BMW Z4 Pictures
• Browse other BMW models
• Read more Previews